Antenna



FIG. 1 is a top plan view of an antenna with a base in broken lines;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top perspective view thereof;

FIG. 5 is a top plan view thereof, with the unclaimed environmentremoved; and,

FIG. 6 is a front elevation view thereof, with the unclaimed environmentremoved.

The broken line in the figure drawings represents unclaimed environmentonly and forms no part of the claimed design.

CLAIM The ornamental design for an antenna, as shown and described. 